Uninstalling DataStax Community
Steps for uninstalling Cassandra by install type.
Select the uninstall method for your type of installation.
Uninstalling Debian- and RHEL-based packages
Use this method when you have installed DataStax Community using APT or Yum.
- Stop the Cassandra and DataStax Agent
                    services:$ sudo service cassandra stop 
- Make sure all services are
                    stopped:$ ps auwx | grep cassandra $ ps auwx | grep datastax-agent ## If the DataStax Agent was installed. 
- If services are still running, use the PID to kill the
                    service:$ sudo kill cassandra_pid $ sudo kill datastax_agent_pid ## If the DataStax Agent was installed. 
- Remove the library and log
                    directories:$ sudo rm -r /var/lib/cassandra $ sudo rm -r /var/log/cassandra 
- Remove the installation directories:RHEL-based packages:$ sudo yum remove "cassandra-*" "datastax-*" ## datastax-x required if the DataStax Agent was installed. Debian-based packages: $ sudo apt-get purge "cassandra-*" "datastax-*" ## datastax-x required if the DataStax Agent was installed.. 
Uninstalling the binary tarball
Use this method when you have installed DataStax Community using the binary tarball.
- Stop the node:
                    $ ps auwx | grep cassandra $ sudo kill <pid> 
- Stop the DataStax Agent if
                    installed:$ sudo kill datastax_agent_pid 
- Remove the installation directory.

